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30202913 = 1319122279
BaseRepresentation
bin111001100110…
…1110000100001
32002211110121102
41303031300201
530212443123
62555204145
7514502066
oct163156041
962743542
1030202913
1116059994
12a146655
136346460
144022c6d
1529b9028
hex1ccdc21

30202913 has 8 divisors (see below), whose sum is σ = 34238400. Its totient is φ = 26412048.

The previous prime is 30202877. The next prime is 30202969. The reversal of 30202913 is 31920203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30202913 - 210 = 30201889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30202213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60893 + ... + 61386.

It is an arithmetic number, because the mean of its divisors is an integer number (4279800).

Almost surely, 230202913 is an apocalyptic number.

It is an amenable number.

30202913 is a deficient number, since it is larger than the sum of its proper divisors (4035487).

30202913 is a wasteful number, since it uses less digits than its factorization.

30202913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122311.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 30202913 is about 5495.7176965343. The cubic root of 30202913 is about 311.4222302327.

The spelling of 30202913 in words is "thirty million, two hundred two thousand, nine hundred thirteen".

Divisors: 1 13 19 247 122279 1589627 2323301 30202913